1 files changed, 47 insertions, 0 deletions
diff --git a/spec/migrations/clean_up_pending_builds_table_spec.rb b/spec/migrations/clean_up_pending_builds_table_spec.rb
new file mode 100644
index 00000000000..9c8d4413337
--- /dev/null
+++ b/spec/migrations/clean_up_pending_builds_table_spec.rb
@@ -0,0 +1,47 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+require_migration!
+
+RSpec.describe CleanUpPendingBuildsTable do
+  let(:namespaces) { table(:namespaces) }
+  let(:projects) { table(:projects) }
+  let(:queue) { table(:ci_pending_builds) }
+  let(:builds) { table(:ci_builds) }
+
+  before do
+    namespaces.create!(id: 123, name: 'sample', path: 'sample')
+    projects.create!(id: 123, name: 'sample', path: 'sample', namespace_id: 123)
+
+    builds.create!(id: 1, project_id: 123, status: 'pending', type: 'Ci::Build')
+    builds.create!(id: 2, project_id: 123, status: 'pending', type: 'GenericCommitStatus')
+    builds.create!(id: 3, project_id: 123, status: 'success', type: 'Ci::Bridge')
+    builds.create!(id: 4, project_id: 123, status: 'success', type: 'Ci::Build')
+    builds.create!(id: 5, project_id: 123, status: 'running', type: 'Ci::Build')
+    builds.create!(id: 6, project_id: 123, status: 'created', type: 'Ci::Build')
+
+    queue.create!(id: 1, project_id: 123, build_id: 1)
+    queue.create!(id: 2, project_id: 123, build_id: 4)
+    queue.create!(id: 3, project_id: 123, build_id: 5)
+  end
+
+  it 'removes duplicated data from pending builds table' do
+    migrate!
+
+    expect(queue.all.count).to eq 1
+    expect(queue.first.id).to eq 1
+    expect(builds.all.count).to eq 6
+  end
+
+  context 'when there are multiple batches' do
+    before do
+      stub_const("#{described_class}::BATCH_SIZE", 1)
+    end
+
+    it 'iterates the data correctly' do
+      migrate!
+
+      expect(queue.all.count).to eq 1
+    end
+  end
+end